Debugger step-over issue (step over performs assembler step in)
lazarus / 12-Debugger

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arent · 2020-10-12 12:03

On last line the debugger does not step over, but opens the assembler
IDE-window.
Problem remains if iniBaseName is assigned to another local string
variable.
Happens all the time during debugging...

Is it possible to disable the assembly window altogether?

Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i type 
TMyComp =class(TComponent)  ...  private    FiniBaseName: string;    
published    property IniBaseName: String read FIniBaseName write
FIniBaseName;  ... procedure TMyComp.do();var  s: stringbegin   ... 
if iniBaseName<>'' then     s := iniBbaseName + '_'           
(Lazarus 2.0.10/FPC 3.2.0 svn 63662, win64)

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Martin_fr · 2020-10-12 12:36

Menu: Tools > Options
Page: Debugger > General

There is a property grid, find the option "FixIncorrectStepOver" and
set it to true.

Alternatively search the forum for "LazDebuggerFp" (a.k.a "FpDebug")
and install this.

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arent · 2020-10-12 14:44

Thanks!

I tried
Tools|Options|Debugger|general|Debugger specific
options|FixIncorrectStepOver
but the assembly windows still activates, although now with
Code: ASM  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i
0000000100009554 664189dc                 mov  
 %bx,%r12w0000000100009558 4885ff                   test  
%rdi,%rdi000000010000955B 7506                     jne    0x100009563
<fpc_ansistr_concat+99>000000010000955D 664489e3                 mov 
 %r12w,%bx0000000100009561 eb0b                     jmp    0x10000956e
<fpc_ansistr_concat+110>0000000100009563 4889f9                   mov
  %rdi,%rcx0000000100009566 e855190000               callq
 0x10000aec0
<SYSTEM_$$_STRINGCODEPAGE$RAWBYTESTRING$$WORD>000000010000956B 6689c3
                 mov    %ax,%bx000000010000956E 6689d8               
  mov    %bx,%ax0000000100009571 6685db                   test  
%bx,%bx0000000100009574 7412                     je     0x100009588
<fpc_ansistr_concat+136>0000000100009576 662d0100                 sub
  $0x1,%ax000000010000957A 7514                     jne    0x100009590
<fpc_ansistr_concat+144>000000010000957C e88f7cffff              
callq  0x100001210  <__$dll$kernel32$GetOEMCP>  at line 8
instead of
Code: ASM  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i
fpc_ansistr_concat 0000000100009500 53                       push  
%rbx0000000100009501 57                       push  
%rdi0000000100009502 56                       push  
%rsi0000000100009503 4154                     push  
%r120000000100009505 4155                     push  
%r130000000100009507 4156                     push  
%r140000000100009509 4157                     push   %r15  at line 2

still jumps into assembly although a bit earlier.

I'm going to look at https://wiki.freepascal.org/LazDebuggerFp

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Martin_fr · 2020-10-12 18:04

Do you compile with Optimization disabled?

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arent · 2020-10-15 19:40

QuoteDo you compile with Optimization disabled? Compiler Options |
Compilation and Linking | Optimization levels = 0 (no optimization)